dioptase /dī-opˈtās/ (mineralogy)

An emerald-green acid copper silicate

• exceptionality
• exceptionally
• exceptionals
• exceptions
• exceptious
• exceptis excipiendis
• exceptive
• exceptless
• exceptor
• exceptors
• excepts
• excerpt
• excerpta
• excerpted
• excerptible
• excerpting
• excerptings
• excerption
• excerptions
• excerptor
• excerptors
• excerpts
• excerptum
• excess
• excess baggage